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01/23/,:04 FRI 13:38 FAX 9.16 6792900 _ URS _ IM 004 <br /> Mr. Paul Supple Project 797613 <br /> January 27,2000 <br /> Page 2 <br /> Based on the analytical results (Table 1), 1T requested permission from the SJCEHD to <br /> overexcavate hydrocarbon impacted soil in the vicinity of the eastern product island <br /> (Figure 1). SJCEHD granted IT permission to overexcavate the contaminated soil. <br /> On September 13, 1999, approximately 50 cubic yards of hydrocarbon impacted soil was <br /> excavated from beneath the former eastern product island dispensers (Figure 2). An IT <br /> geologist collected five verification soil samples (samples ND4, ESW4, SPL4, NSW4 <br /> and SD4). Sample locations and sampling methodology were directed by Lori Duncan, <br /> the on-site SJCEHD representative. Sample.locations are shown on Figure 2. Samples <br /> were collected at depths ranging from 4.0 to 4.5 feet bgs. Sample tubes were driven into <br /> the soil with a slide hammer tool, sealed with Teflon®tape and plastic end caps, labeled, <br /> and placed on ice pending transport to the analytical laboratory. Soil samples were <br /> transported, with chain-of-custody documentation, to Sequoia and analyzed for TPHG, <br /> BTEX, and MTBE. <br /> On September 24, 1999, an IT geologist collected soil stockpile verification samples <br /> from two separate soil stockpiles that were generated during the upgrade of product lines <br /> (SPC'1,2,3,4 and SPIM). One stockpile generated' during the overexcavation of <br /> contaminated soil from the eastern product island (SP-1) was sampled on September 13, <br /> 1999. These soil samples were transported, with chain-of-custody documentation, to <br /> Sequoia and analyzed for TPHG,BTEX, MTBE, and total lead. <br /> On October 7, 8 and 11, 1999, the soil stockpiles were transported off-site by Dillard <br /> Environmental Services. Stockpile SPC 1,2,3,4 was disposed of at BFI/Vasco Landfill in <br /> Livermore, California; stockpile SPIM was combined with stockpile SP-1 and this <br /> material was disposed of at TPS Technologies in Richmond, California. Stockpile <br /> disposal documentation is included as Appendix B. <br /> ANALYTICAL RESULTS <br /> Results of verification soil sample analysis and'stockpile characterization are presented <br /> in the following sections., Copies of certified analytical reports and chain-of-custody <br /> documentation are presented in Appendix A. <br /> TT Corporation <br /> Cr1C:lArchiveWco1b0801 "rta16080P901.DOC-9S 198:1 01127/00 <br />